倾泻 evokes a violent, large-volume downward flow - waterfalls, heavy rain, lava, even metaphorical 'cascades' of light or emotion. It is more vivid and literary than 流 (liú, to flow).
memory
倾 (to tilt/topple) + 泻 (to flow rapidly down) - both halves push the meaning of 'tipping over and rushing out.'
